Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7270024 | Rotary shaft hermetic sealing device A drive crank shaft and a load shaft with an eccentrically placed center shaft coupler form a mechanical torque transferring structure. Two convoluted rubber seals mounted on a center shaft coupler, a drive shaft support an a load shaft support enclose the working f... | 09/18/2007 |
| 7086300 | Large stroke linear motion flexural apparatus Embodiments of the present invention are directed to a linear motion flexural apparatus to provide friction-free linear travel for large stroke motion. In one embodiment, a linear motion flexural apparatus comprises a first member having a first surface, and a secon... | 08/08/2006 |
| 6918492 | Baffle assembly for a sealed shaft on a vibratory apparatus A sealed wheel case for use on a vibrating aggregate processing device comprises a housing sized to hold a rotatable wheel supported on a shaft, the housing having a base, a peripheral sidewall, and a cover. The cover includes an aperture adapted to receive therethr... | 07/19/2005 |
| 5917259 | Coupling of an electric motor to a load An improved connection coupling for providing rotary motion from an electric motor rotor to a load wherein a mechanical coupling element is attached to an end of the rotor and to the shaft of the load. The free end of the rotor includes a cavity which ext... | 06/29/1999 |
| 5109720 | Feed unit apparatus A nut block, which is driven by a feed screw shaft and which is movable axially within a guide rail having a U-shaped cross section, is provided with extending portions extending laterally from both upper side portions thereof. The extending portions are ... | 05/05/1992 |
| 5074160 | Feed unit apparatus A guide rail has an axially extending recessed groove opening upwardly to guide a nut block to move rectilinearly along the recessed groove when a ball screw shaft is rotated. A pair of strip-shaped magnets are secured to upper surfaces of both side walls... | 12/24/1991 |
| 4653519 | Rinsing apparatus for contact lens cleaning system A rinsing apparatus is provided for a contact lens cleaning system. This rinsing apparatus comprises a container for receiving a quantity of rinsing fluid, receptacles for receiving contact lenses and an agitator mounted in the container for a compound ag... | 03/31/1987 |
| 4569669 | Drive units for effecting torque-transmission via a non-rotating sealing tube Drive units for effecting torque-transmission via a non-rotating sealing tube are provided for various fields of use where a positive sealing is required for a shaft that passes through an aperture (e.g. a propeller shaft transmission). The shaft (4), rot... | 02/11/1986 |
| 4403521 | Continuous shaft seal A sealing device for sealing the joint between a through shaft and a wall partition. The sealing device is comprised of a relatively thin, flexible diaphragm sandwiched between nonrotatable pressure plates which are floatably positioned between two incli... | 09/13/1983 |
| 4216677 | Hermetically sealed rotary drive apparatus Rotary drive apparatus includes coaxial inner and outer shaft portions. One portion supports a pair of bearings on axes offset from the shaft axis. The other portion supports rotatable bearing rings offset from the shaft and bearing axes, but in alignment... | 08/12/1980 |
| 4186974 | Device for introducing a force-transmitting machine element into a vessel Device for introducing a power-transmitting machine element into a vessel containing an agressive atmosphere and having a wall formed with openings, to the defining margin of which gloves are, respectively, secured, includes: a flange set into the wall, a... | 02/05/1980 |
| 4178806 | Toggle switch seal An improved toggle switch seal for sealing the opening in a panel through which the toggle switch projects. As contrasted with prior art devices, the portion of the seal surrounding the toggle is relatively thick-walled to prevent ballooning, and is provi... | 12/18/1979 |
| 3945257 | Force balance transmitter and method of making the same A force balance transmitter having a substantially flat base plate detachably carrying a primary unit and a secondary unit on an upper substantially flat surface thereof. A bell crank flexure pivot operatively interconnects a primary arm of the primary un... | 03/23/1976 |
| 3933052 | Pressure compensated hermetically sealed transmission system A pressure compensated, hermetically sealed transmission system is described which includes, basically, a hermetic rotary coupling. Rotary motion is applied through a casing, wherein a cylindrically shaped input shaft having a circular inner bearing race ... | 01/20/1976 |
